This trackball is very comfortable to hold. I don't know what it's made of, but it feels nice and soft. It's as good as a Logitech trackball, and Logitech stopped making wired trackballs (which I thought was a mistake). I haven't done anything with it other than plug it in and use it. I use left mouse button, right mouse button and scroll. There are other buttons I just haven't messed with. It works and works well. This is in response to someone asking me to find a case that fits this trackball. I have this trackball and I also bought a Logitech trackball. I have a case for a Logitech trackball "Hard Travel Case for Logitech MX Ergo Advanced Wireless Trackball Mouse by co2CREA (Case for Mouse)", here is a link to it https://www.amazon.com/gp/ product/B075JF2S7H/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1. In this case, the trackball fits perfectly. This is not optimal. I have photos, let's see if I can upload them. You can close the case until the zipper touches the USB cable on top of the trackball. The cable does not fit the case in any way and I think if you try to bend it to fit you will damage the cable.
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